Fix submitting cancels search (#687)

Author: TomBursch

kitchenowl/lib/pages/household_page/shoppinglist.dart

@@ -63,6 +63,8 @@ class _ShoppinglistPageState extends State<ShoppinglistPage> {
                       if (state.result.first is! ShoppinglistItem) {
                         cubit.add(state.result.first);
                       }
+                    } else {
+                      cubit.search(searchController.text);
                     }
                   },
                 ),

kitchenowl/lib/pages/item_search_page.dart

@@ -66,6 +66,10 @@ class _ItemSearchPageState extends State<ItemSearchPage> {
                 alwaysExpanded: true,
                 textInputAction: TextInputAction.done,
                 onSubmitted: () {
+                  if (cubit.state.query != searchController.text) {
+                    cubit.search(searchController.text);
+                    return;
+                  }
                   if (cubit.state.selectedItems
                       .contains(cubit.state.searchResults.first)) return;
                   if (!widget.multiple) {